And fog will occur with every flange injury because, due to the irregular shape of the emitting source, so some spraying will always occur!
Regardless of flash point, a zone around the secondary source can be formed due to the spray effect!
Keep up good work!
Arpad
Many people don’t know that the Annexes to the Standards (IEC 60079-14/-17
Any Ex personnel competency shall be refreshed within maximum 5 years. If
Responsibility for training and competence The engineering profession is responsible for determining
To document the classification of potentially explosive atmospheres into an explosive zone
arpadveress 
